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Contract OI history

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Mar 19, 2027 EXPIRATION

CAT $540.00 Put

CAT270319P00540000

Latest saved OI194Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $540.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 194970 2026-10-02: 92 OI2026-10-05: 92 OI2026-10-06: 126 OI2026-10-07: 178 OI2026-10-08: 178 OI2026-10-09: 178 OI2026-10-13: 178 OI2026-10-14: 178 OI2026-10-15: 178 OI2026-10-16: 179 OI2026-10-21: 189 OI2026-10-23: 194 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CAT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing194+5
Oct 21, 2026189+10
Oct 16, 2026179+1
Oct 15, 20261780
Oct 14, 20261780
Oct 13, 20261780
Oct 09, 20261780
Oct 08, 20261780
Oct 07, 2026178+52
Oct 06, 2026126+34
Oct 05, 2026920
Oct 02, 202692No prior observation